Quarter	US dollars
2004-12-31	1077
2005-03-31	1420
2005-06-30	1418
2005-09-30	1339
2005-12-31	1186
2006-03-31	1377
2006-06-30	1476
2006-09-30	1609
2006-12-31	1669
2007-03-31	1763
2007-06-30	2059
2007-09-30	2137
2007-12-31	2073
2008-03-31	2506
2008-06-30	2832
2008-09-30	3087
2008-12-31	2685
2009-03-31	2584
2009-06-30	2390
2009-09-30	2591
2009-12-31	2446
2010-03-31	2748
2010-06-30	3154
2010-09-30	3457
2010-12-31	4300
2011-03-31	3996
2011-06-30	4327
2011-09-30	5138
2011-12-31	5450
2012-03-31	5178
2012-06-30	5539
2012-09-30	5118
2012-12-31	7909
2013-03-31	19297
2013-06-30	19500
2013-09-30	18887
2013-12-31	18911
2014-03-31	18199
2014-06-30	17653
2014-09-30	15718
2014-12-31	12830
2015-03-31	12314
2015-06-30	13771
2015-09-30	15512
2015-12-31	15524
2016-03-31	16471
2016-06-30	16926
2016-09-30	16387
2016-12-31	15262
2017-03-31	16853
2017-06-30	15632
2017-09-30	16653
2017-12-31	16948
2018-03-31	16473
2018-06-30	18108
2018-09-30	18419
2018-12-31	17907
2019-03-31	18649
2019-06-30	21764
2019-09-30	23410
2019-12-31	23799
2020-03-31	28068
2020-06-30	27486
2020-09-30	27957
2020-12-31	25661
2021-03-31	26955
2021-06-30	25029
2021-09-30	24526
2021-12-31	23554
2022-03-31	25191
2022-06-30	23613
2022-09-30	24851
2022-12-31	24865
2023-03-31	24618
2023-06-30	22731
2023-09-30	23248